Which event of his time does miller use as a basis for the crucible?

Mc Carthy hearings

Explanation:

Arthur Miller was an American writer who lived from 1915 to 2005. He wrote "The Crucible" a playwright in which he uses the Salem witch trials that occurred in the 17th century as an allegory of McCarthyism. McCarther was a Senator who promoted political repression of alleged communists, similar to the persecution of the witches in the Salem trials.

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4